| Yicaris Temporal range:
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|---|---|
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| Artist's reconstruction of Yicaris dianensis | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Genus: | †Yicaris Zhang et al., 2007 |
| Type species | |
| †Yicaris dianensis Zhang et al., 2007
| |
Yicaris dianensis is a species of microscopic pancrustacean[1][2] found in the Yu’anshan Formation, Yunnan Province, China.[3] Yicaris' discovery is notable because its age suggests that true crustaceans already existed as far back in time as Early Cambrian, much earlier than other fossils known from the Middle and Late Cambrian. Its closest living relatives are believed to be Cephalocaridans.[4]
- ^ Daley, Allison C.; Antcliffe, Jonathan B.; Drage, Harriet B.; Pates, Stephen (2018-05-22). "Early fossil record of Euarthropoda and the Cambrian Explosion". Proceedings of the National Academy of Sciences. 115 (21): 5323–5331. Bibcode:2018PNAS..115.5323D. doi:10.1073/pnas.1719962115. PMC 6003487. PMID 29784780.
- ^ "Early Crustacean Evolution and the Appearance of Epipods/Gills". ResearchGate. Retrieved 2020-11-04.
- ^ Zhang, Xi-guang; Siveter, David; Waloszek, Dieter; Maas, Andreas (4 October 2007). "An epipodite-bearing crown-group crustacean from the Lower Cambrian". Nature. 449 (7162): 595–598. Bibcode:2007Natur.449..595Z. doi:10.1038/nature06138. PMID 17914395. S2CID 4329196.
- ^ Wolfe, Joanna M.; Hegna, Thomas A. (2014). "Testing the phylogenetic position of Cambrian pancrustacean larval fossils by coding ontogenetic stages". Cladistics. 30 (4): 366–390. doi:10.1111/cla.12051. ISSN 1096-0031. PMID 34788971. S2CID 86382575.
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